Vacuum cleaner



FIG. 1 is a left side elevational view of a vacuum cleaner showing our new design, the left side being a mirror image;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a perspective view thereof. 

The ornamental design for vacuum cleaner, as shown and described. 